Aim: To evaluate effectiveness of multiple rotary file systems on removal of the filling materials during retreatment of oval-shaped root canals.Methods: 40 oval root canals were instrumented with ProTaper Next to size X4 (40/.06).The canals were then allocated into two equal groups according to the final rinse, Group I: with Biopure MTAD, and Group II: with 17% EDTA.All the canals were later obtu...
Aim: To evaluate effectiveness of multiple rotary file systems on removal of the filling materials during retreatment of oval-shaped root canals.Methods: 40 oval root canals were instrumented with ProTaper Next to size X4 (40/.06).The canals were then allocated into two equal groups according to the final rinse, Group I: with Biopure MTAD, and Group II: with 17% EDTA.All the canals were later obtu...